Alert archive / Nebraska / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 13, NWS Cheyenne, WY

May 18, 2014Cheyenne County, Kimball County, Morrill County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 18, 2014, 6:54 PM MDT for Cheyenne County, Kimball County, Morrill County, Nebraska. It was in force for 66 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 18, 2014, 6:54 PM MDT (00:54 UTC)
Expired
May 18, 2014, 8:00 PM MDT
In force
66 min
Issued by
NWS Cheyenne, WY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cheyenne County, NE, Kimball County, NE, Morrill County, NE

The radar

The Cheyenne radar (KCYS), 133 km from the middle of the area, began a volume at 00:52 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.9 hours before the alert went out and 161 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2014-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2014-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
7 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
4305 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

859 
WUUS55 KCYS 190054
SVRCYS
NEC033-105-123-190200-
/O.NEW.KCYS.SV.W.0013.140519T0054Z-140519T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
654 PM MDT SUN MAY 18 2014

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHEYENNE COUNTY IN THE PANHANDLE OF NEBRASKA...
  EAST CENTRAL KIMBALL COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTH CENTRAL MORRILL COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 800 PM MDT

* AT 652 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES SOUTH OF
  DIX...AND MOVING NORTHEAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS. AT 635 PM MDT...A 66 MPH WIND GUST WAS 
  REPORTED AT THE KIMBALL AIRPORT.

  SOURCE...RADAR INDICATED.

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  POTTER AROUND 710 PM MDT.
  GURLEY AROUND 750 PM MDT.
  DALTON AROUND 800 PM MDT.

THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILEPOSTS 29 AND 54.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4161 10315 4120 10277 4103 10348 4115 10359
TIME...MOT...LOC 0054Z 236DEG 24KT 4114 10341

HAIL...<.75IN
WIND...60MPH

$$

RUBIN
2 follow-up statements
162 
WWUS55 KCYS 190113
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
713 PM MDT SUN MAY 18 2014

NEC105-190123-
/O.CAN.KCYS.SV.W.0013.000000T0000Z-140519T0200Z/
KIMBALL NE-
713 PM MDT SUN MAY 18 2014

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL KIMBALL COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4113 10309 4127 10325 4161 10315 4120 10277
TIME...MOT...LOC 0113Z 236DEG 24KT 4128 10312

$$

NEC033-123-190200-
/O.CON.KCYS.SV.W.0013.000000T0000Z-140519T0200Z/
CHEYENNE NE-MORRILL NE-
713 PM MDT SUN MAY 18 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
MORRILL AND NORTHERN CHEYENNE COUNTIES UNTIL 800 PM MDT...

AT 709 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES NORTHWEST
OF BROWNSON...AND MOVING NORTHEAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS. AT 635 PM MDT...A 66 MPH WIND GUST WAS 
REPORTED AT THE KIMBALL NEBRASKA AIRPORT.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  GURLEY AROUND 730 PM MDT.
  DALTON AROUND 735 PM MDT.

THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILEPOSTS 47 AND 54.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4113 10309 4127 10325 4161 10315 4120 10277
TIME...MOT...LOC 0113Z 236DEG 24KT 4128 10312

HAIL...<.75IN
WIND...60MPH

$$

RUBIN
938 
WWUS55 KCYS 190132
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
732 PM MDT SUN MAY 18 2014

NEC033-123-190142-
/O.CAN.KCYS.SV.W.0013.000000T0000Z-140519T0200Z/
CHEYENNE NE-MORRILL NE-
732 PM MDT SUN MAY 18 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MORRILL AND
NORTHERN CHEYENNE COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER...GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4113 10309 4127 10325 4161 10315 4120 10277
TIME...MOT...LOC 0132Z 236DEG 24KT 4135 10298

$$

RUBIN

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 6:35 PM MDTTornado WarningCYSBox Butte, Sioux40 min
May 18, 6:38 PM MDTSpecial Weather StatementCYSKimball67 min
May 18, 6:44 PM MDTSpecial Weather StatementCYSMorrill46 min
May 18, 7:08 PM MDTTornado WarningCYSBox Butte52 min
May 18, 7:40 PM MDTSevere Thunderstorm WarningCYSBox Butte35 min
May 18, 10:01 PM MDTSpecial Weather StatementCYSBox Butte44 min
May 19, 3:16 PM MDTSpecial Weather StatementCYSSioux44 min
May 19, 5:16 PM MDTSpecial Weather StatementCYSScotts Bluff44 min
May 19, 5:51 PM MDTSpecial Weather StatementCYSBanner39 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2014Every severe thunderstorm warning in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.